this Hadith because Jarir embraced Islam after Surat Al-Ma'idah was revealed." [1] This is the wording collected by Muslim. The subject of the Messenger of Allah wiping over his Khuffs, instead of washing the feet, if he had worn his Khuffs while having Wudu', reaches the Mutawatir grade of narration, and they describe this practice by his words and actions.

Performing Tayammum with Clean earth When There is no Water and When One is Ill

Allah said, {if you are ill or on a journey or any of you comes from the Gha'it (toilet), or you have touched women — and you find no water, then perform Tayammum with clean earth and rub therewith your faces and hands.}

We discussed all of this in Surat An-Nisa', and thus we do not need to repeat it here. We also mentioned the reason behind revealing this Ayah. Yet, Al-Bukhari mentioned an honorable Hadith here specifically about the Tafsir of this noble Ayah. He recorded that 'A'ishah said, "Upon returning to Al-Madinah, a necklace of mine was broken (and lost) in Al-Bayda' area. Allah's Messenger stayed there and went to sleep with his head on my lap. Abu Bakr ('A'ishah's father) came and hit me on my flank with his hand saying. 'You have detained the people because of a necklace?' So I wished I were dead because (I could not move) the Messenger was sleeping on my lap and because of the pain Abu Bakr caused me. Allah's Messenger got up when dawn broke and there was no water. So Allah revealed, {O you who believe! When you stand (intend) to offer As-Salah (the prayer), then wash your faces} until the end of the Ayah. Usayd bin Al-Hudayr said, 'O the family of Abu Bakr! Allah has blessed the people because of you. Therefore, you are only a blessing for the people.'"

Allah said, {Allah does not want to place you in difficulty,} This is why He made things easy and lenient for you. This is why He allowed you to use Tayammum when you are ill and when you do not find water, to make things comfortable for you and as mercy for you. Allah made Tayammum in place of Wudu', and Allah made it the same as ablution with water for the one who it is legitimate for, except for certain things, as we mentioned before. For example; Tayammum only involves one strike with the hand on the sand and wiping the face and hands. Allah said, {but He wants to purify you, and to complete His favor on you that you may be thankful.} for His bounties on you, such as His easy, kind, merciful, comfortable and lenient legislation.

Supplicating to Allah after Wudu'

The Sunnah encourages supplicating to Allah after Wudu' and states that those who do so are among those who seek to purify themselves, as the Ayah above states. Imam Ahmad, Muslim and the collectors of Sunan narrated that 'Uqbah bin 'Amir said, "We were on watch, guarding camels, and when my turn to guard came, I took the camels back at night. I found that the Messenger of Allah was giving a speech to the people. I heard these words from that speech: 'Any Muslim who performs Wudu' properly, then stands up and prays a two Rak'ah prayer with full attention in his heart and face, will earn Paradise.' I said, 'What a good statement this is!' A person who was close by said, 'The statement he said before it is even better.' When I looked, I found that it was 'Umar, who said, 'I saw that you just came. The Prophet said, 'When any of you performs Wudu' properly and says, 'I bear witness that there is no deity worthy of worship except Allah and that Muhammad is His servant and Messenger', the eight doors of Paradise will be opened for him so that he can enter from any door he wishes.''" This is the wording collected by Muslim.

The Virtue of Wudu'

Malik recorded that Abu Hurayrah said that the Messenger of Allah said, 'When the Muslim or the believing servant performs Wudu' and washes his face, every sin that he looked at with his eyes will depart from his face with the water, or with the last drop of water. When he washes his hands, every sin that his hands committed will depart from his hands with the water, or with the last drop of water. When he washes his feet, every sin to which his feet took him will depart with the water, or with the last drop of water. Until, he ends up sinless.' Muslim also recorded it.

Muslim recorded that Abu Malik Al-Ash'ari said that the Messenger of Allah said, 'Purity is half of faith and Al-Hamdu Lillah (all the thanks are due to Allah) fills the Mizan (the Scale). And Subhan Allah and Allahu Akbar (all praise is due to Allah, and Allah is the Most Great) fills what is between the heaven and earth. As-Sawm (the fast) is a Junnah (a shield), Sabr (patience) is a light, Sadaqah (charity) is evidence (of faith) and the Qur'an is proof for, or against you. Every person goes out in the morning and ends up selling himself, he either frees his soul or destroys it.'

Muslim recorded that Ibn 'Umar said that the Messenger of Allah said, 'Allah does not accept charity from one who commits Ghulul, or prayer without purity.'

[1] Fath Al-Bari 1:589, Muslim 1:228.
[2] See Surat An-Nisa', no. 43 for an explanation of 'touched women'
[3] Fath Al-Bari 8:121.
[4] According to An-Nawawi; "Submission of the limbs and humility of the heart."
[5] Ahmad 4:153, Muslim: 1:209, Abu Dawud 1:118, An-Nasa'i 1:92, Ibn Majah 1:159.
[6] Al-Muwatta' 1:32.
[7] Muslim 1:215.
[8] Muslim 1:203.
[9] Ghulul means to behave treacherously. Here it is about stealing from the goods taken during war.
[10] Muslim 1:204.